Research Design Time and Location

data. So, any alternative answers were given a score very good = 5, good = 4, average = 3, weak = 2, and strongly weak = 1. Table 3 Lattice questionnaires for Expert Material No Indicators Numeral Classifier 1 Suitability 4 2 Completeness 2 3 Ease 2 4 Clarity 2 Source: Azhar Arsyad 2014 and Rayandra Asyar 2012 with modification Table 4 Lattice questionnaires for media expert No Indikator Numeral Classifier 1 Effectiveness of the use media 2 2 Ease 2 3 Suitable 2 4 Completeness 2 5 Comunicative and interactive 2 Source: Azhar Arsyad 2014 and Rayandra Asyhar 2012 with modification Table 5 Lattice questionnaire for students No Indicator Numeral Classifier 1 Ease 2 2 Suitable 2 3 Clarity 4 4 Display 3 5 Interesting 3 Source: Azhar Arsyad 2014 and Rayandra Asyar 2012 with modification Table 6 Lattice Questionnaire for Students` Motivation No Indicators Numeral Classifier Total 1 Assiduous in assignments 1, 2, 3 3 2 Dilligent in facing difficulty 4, 5, 6, 7 4 3 Have an interest in the subject 8, 9, 10 3 4 Like to do something by themselves 11, 12, 13 3 5 Easily bored in daily assignments 14, 15, 16 3 6 Able to stand for their argument 17, 18 2 7 Not easly to let their belief argument 19 1 8 Like to find and solve the problems 20 1 Total 20 Source: Sardiman 2011: 83 with modification negative statement

F. Instrument Test

1. Validity Test

According to Suharsimi Arikunto 2010: 211, validity is a measure that indicates the levels of validity or the validity of an instrument. An instrument is valid if the instrument is able to measure what they want and can reveal the data of the variables studied appropriately. The calculation of validity test used the computer application program that is SPSS version 16. According to Suharsimi Arikunto 2010: 213, instrument is valid if r count is be consulted by r table at significance level of 5 and if the value of r count is greater that r table or equal to r table so the instrument is valid. This research, researcher used 20 students out of sample. Lampiran 4b halaman 143